EP1940721B2 - Coussin de levage cuneiforme - Google Patents

Coussin de levage cuneiforme Download PDF

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Publication number
EP1940721B2
EP1940721B2 EP06799793.2A EP06799793A EP1940721B2 EP 1940721 B2 EP1940721 B2 EP 1940721B2 EP 06799793 A EP06799793 A EP 06799793A EP 1940721 B2 EP1940721 B2 EP 1940721B2
Authority
EP
European Patent Office
Prior art keywords
cushion
lifting
lifting cushion
wedge
fore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06799793.2A
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German (de)
English (en)
Other versions
EP1940721B1 (fr
EP1940721A1 (fr
Inventor
Karl-Olof Niklasson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxgrepp Teknik AB
Original Assignee
Maxgrepp Teknik AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority claimed from SE0502623A external-priority patent/SE529429C2/sv
Application filed by Maxgrepp Teknik AB filed Critical Maxgrepp Teknik AB
Publication of EP1940721A1 publication Critical patent/EP1940721A1/fr
Publication of EP1940721B1 publication Critical patent/EP1940721B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/35—Inflatable flexible elements, e.g. bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type

Definitions

  • the present invention relates to a lifting cushion that is wedge-shaped and is formed by a top part and a bottom part with connecting walls, and which is arranged to be fillable with a fluid, e.g., air, gas or liquid where the top part and the bottom part, as well as also the other parts of the same, that consist of a formable material, e.g., rubber material, plastic material, composite material or a combination thereof, are joined to form a common unit in the forward edge of the cushion.
  • a fluid e.g., air, gas or liquid
  • a formable material e.g., rubber material, plastic material, composite material or a combination thereof
  • Known solutions to allow lifting the entire or parts of overturned vehicles comprise thick inflatable cushions.
  • Said cushions are known formed with a fore edge that is thick and formed by the accumulated layers of the cushion piled on each other, wherein said edge may be difficult to insert between, e.g., the ground and the wrecked vehicle in question, and through narrow spaces. Lifting of the vehicle, for example, is desired to be made quickly to be able to save lives and/or the environment.
  • Such a lifting device is for instance known by WO 79/00753 .
  • Said known lifting device incorporates a wedge-shaped cushion formed by a top part and bottom with connecting walls, and which is arranged to be fillable with fluid.
  • the top part, the bottom part and other parts of the cushion consist of formable material and are joined to form a common unit in the forward edge of the cushion.
  • Said forward edge is equal thick as the back edge of the cushion.
  • Told edges consist of bars in pairs or of pairs of pivotally legs, which are pivotably supported to each other in a pivot.
  • Told thickness of said edges make it difficult to reach narrow spaces with the said lifting device.
  • the main object of the present invention is primarily to solve said problems in a simple, reliable and efficient way with properly functioning means therefor.
  • a lifting cushion which substantially is characterized in, that said forward edge is extended in relation to the front wall of the lifting cushion and thereby forms a thin fore extended part, which extends in front of and outside said front wall, and that said fore part of the wedge-shaped lifting cushion is so thin and stiff that when the lifting cushion is filled with fluid, the fore extended top part and the bottom part are expanded without preventing the fore part of the wall of the lifting cushion from smoothing out and forming the fore part of the lifting cushion in a filled state, so that it is allowed to be interposable along a support under or between objects to be lifted.
  • the object of the present invention is to provide a lifting cushion, which is arranged to function by being filled with air, gas or the like or different kinds of liquids, which has a reinforced bottom and top, which in the forward edge thereof is extended and joined to one unit, and which thereby forms a lifting cushion the fore part of which is so thin that it, thanks to this, readily can be inserted into narrow spaces without obstruction from any fore folded wall of the lifting cushion.
  • a breaking or lifting device previously known by WO 79/00753 A1 comprises an inflatable bellows (47) having branches (48, 49) situated on each side of the same, similar to a bellows having stiff operable faces.
  • the two stiff faces (48, 49) are joined to each other at the outer ends thereof via a pivot joint (58).
  • the main idea of the present invention is that the lifting cushion desirably should be inserted in a compressed unfilled state into narrow spaces in order to, in position, be able to expand the lifting cushion (20) contained therein.
  • a fore part (21) of said lifting cushion (20) is withdrawn from the fore transverse withdrawn wall (3) of the lifting cushion (20).
  • US 4,060,170 A discloses a lifting device formed by a fluid-fillable cushion including a laterally displaceable jack.
  • the entire cushion may be filled with fluid, however, in doing so, no thin extended forward edge that easily can be inserted into narrow spaces is formed.
  • US 3,990,681 A relates to a wedge-shaped wheel-lifting device having a bridging part (19) at the low edge of the lifting device in order to facilitate driving with the wheel onto the wedge-shaped fluid-fillable lifting device (10).
  • Said part (19) is not essential to the shown known lifting device.
  • a lifting cushion 20 is formed that is wedge-shaped by a top part 1 and a bottom part 2 with connecting walls 3, 3 1 , 3 2 , 3 3 around the circumference of the entire lifting cushion, and which lifting cushion 20 is arranged to be fillable with fluid 10, such as, e.g., air, gas or liquid.
  • fluid 10 such as, e.g., air, gas or liquid.
  • Said top part 1 and bottom part 2 are joined, e.g., by vulcanization, agglutination, needlework or another suitable joining technique to form a common unit 21 in the forward edge 4 of the cushion 20.
  • Said forward edge 4 is extended in relation to the front wall 3 of the lifting cushion and thereby it forms a thin fore extended front part 21, which extends in front of and outside said front wall 3.
  • a lifting cushion 20 is obtained, the fore part 21 of which is so thin as well as stiff that it is readily allowed to be interposable along a frame 50 under or between objects 22 to be lifted and to be able to make the first lifting so that it is subsequently possible to find space to insert larger lifting cushions if this is needed.
  • the fore wedge-shaped part 4 of the cushion 20 is arranged in such a way that when the lifting cushion 20 is filled with a suitable fluid 10, the fore extended top part 1 and the bottom part 2 are expanded and straightened out without preventing the fore wall 3 of the lifting cushion from smoothing out and forming the fore part of the lifting cushion 20 in a filled state.
  • the sides of the lifting cushion consist of a formable material, as well as also the other parts of the same, e.g., rubber material, plastic material, composite material or a combination thereof, and that preferably is provided with suitable reinforcement to be able to manage to resist the contained high pressure required to achieve the intended purpose.
  • the top 1 and bottom 2 of the lifting cushion may be composed of formed, preferably reinforced, material, which may have a hard or a soft surface directed outward.
  • the bottom surface and the top surface of the bottom part 2 and the top part 1, respectively, may have equally large surface as the circumference of the actual lifting cushion or be larger than this so that it is outside the same and the limiting edge thereof extends outside the same.
  • the top part 1 and bottom part 2 of the lifting cushion are joined to each other, which are extended outside the actual fillable lifting cushion 20 and the front wall 3 thereof, so that the extensions 1A, 2A of the two parts 1, 2 form a common forward-edge unit 21.
  • Said unit 21 may be provided with a number of anchor loops 7 so that the raised object 22, e.g., a car, can be moved by means of the wedge-shaped cushion 20 if, e.g., wires, etc., are attached in said loops 7 and pulling.
  • This design also allows to spread apart two objects that desirably should be spaced apart in relation to each other, e.g., in a pit or in other similar situations.
  • a rod that is attached in said loops 7, the flattened lifting cushion 20 can easily be guided to be pushed in through the intended opening, even if this is small, before inflation with a suitable fluid.
  • the fore wall 3, sides 3 1 , 3 2 and rearward edge 5 of the cushion consist of formable, preferably reinforced, material, having a hard or soft surface.
  • the fore wedge-shaped part 21 is arranged in such a way that when the lifting cushion 20 is filled with fluid, the fore extended top part 1 and the bottom part 2 are expanded without preventing the fore part of the wall 3 of the lifting cushion from smoothing out and forming the fore part of the lifting cushion in a filled state, and by the wedge-shape of the cushion, a reliable lifting process takes place and the lifting is effected at a favourable radius to the object.
  • said extended part 21 is only active during the proper insertion stage of the lifting cushion 20 through the intended opening. After that, it is passive while the front wall 3 of the cushion and the remaining part of the cushion 20 are active during the proper lifting process. See, for instance, Fig. 2 .
  • the circumferential sides of the lifting cushion consist of a formable material, which preferably is provided with reinforcements in order to stand the pressure required for the intended purpose, and the top part 1 and bottom part 2 of the lifting cushion are preferably substantially quadrangular and have a decreased wedge-shape toward the forward edge 4 thereof.
  • the height ratio of the cushion 20 may be approx. 1:3 between the forward edge 4 and rearward edge 5 of the inflatable part of the cushion 20.
  • connection 51 to fill the inner space 11 of the cushion with a fluid 10 and evacuate the same from fluid, respectively.
  • a safety valve 6 which prevents overfilling of the cushion 20 with fluid 10.
  • the wedge-shaped cushion 20 which is thinner than designs known today, the possibility is provided of inserting the wedge-shaped cushion under the vehicle 22 in a fast and reliable way without needing to dig or in another way provide space for other lifting devices.
  • FIG. 6-12 additional embodiment examples of the invention are shown in Figs. 6-12 and where the material in the sides 3 1 , 3 2 and rearward side 3 3 , respectively, of the cushion consists of Kevlar material, while the material in the top- and underside 52, 53 of the cushion consists of fabric-reinforced rubber cloth.
  • the rubber cloth protects the top- and underside 52, 53 of the wedge-shaped lifting cushion 20 while the built-in protection of Kevlar material protects the sides 3 1 , 3 2 of the cushion 20 without this affecting the height of the cushion upon the insertion of the cushion 20 under the object to be lifted, while the Kevlar material in the rearward side 3 3 of the cushion protects the cushion against damage due to, e.g., the ground 50.
  • the design is also based on reinforcing, at an increased pressure in the lifting cushion 20, the Kevlar cloth in the sides 3 1 , 3 2 of the wedge cushion so that it can work at a high pressure.
  • the pressure in the cushions is approx. 1,0 bar, but this pressure may be increased in order to achieve lifting forces of at least 7000 kp.
  • the cushion 20 can be operated in many different ways, and which opens up new possibilities of using the same.
  • the carrying handles 55 in the rearward edge of the wedge cushion 20 provide new possibilities of being able to lift it up in, e.g., towers or on the outside of buildings and there press apart items or objects. It may, e.g., be lowered into pits or inserted into pipes or culverts in order to press apart parts that block passage. Thus, it may be applied in other situations where other solutions to succeed are lacking.
  • Said wedge-shaped lifting cushion 20 is only 8 mm thick in the forward edge and makes it possible to bring in the cushion 20 also in the most severe situations.
  • the lifting height is approx. 15 cm in the forward edge and approx. 40 cm in the rearward edge, and the dimension of the sides of the lifting cushion may suitably be approx. 70 cm ⁇ 70 cm.
  • wire loops 7 are vulcanized into the structure according to the above mentioned, so as to be able to fix tools therein that are considerably thinner than a regular boat hook. If it is possible to avoid digging in order to bring the cushion under, it is possible to save several vital minutes during rescue operations.
  • the unique properties of the wedge-shaped cushion by being extremely thin and furthermore having a lifting height that allows starting the use of other lifting devices, e.g., high-lift lifting cushions, quickly in order to save lives and prevent damage to the nature, gives the time saving that may be the difference between life and dead or that may prevent a devastating environmental disaster.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Claims (13)

  1. Coussin de levage (20) en forme de coin constitué d'une partie supérieure (1) et d'une partie inférieure (2) avec des parois de liaison (3-33), et qui est prévu pour être rempli avec un fluide, par exemple de l'air, un gaz ou un liquide, dans lequel la partie supérieure (1) et la partie inférieure (2), aussi que les autres parties de celui-ci, qui sont en une matière pouvant être déformée, par exemple, en caoutchouc, en matière plastique, en matière composite ou une combinaison de celles-ci, sont réunies pour former une unité commune (21) en un bord avant (4) du coussin (20), caractérisé en ce que ledit bord avant (4) se prolonge par rapport à la paroi (3) avant du coussin de levage et forme de ce fait une partie avant mince d'extension (21), qui s'étend devant et en dehors de ladite paroi (3) avant, et en ce que ladite partie avant (21) du coussin de levage en forme de coin est si mince et rigide que lorsque le coussin de levage (20) est rempli de fluide, la partie supérieure s'étendant vers l'avant (1) et la partie inférieure (2) se dilatent sans empêcher la partie avant de la paroi (3) du coussin de levage de se défroisser et de former la partie avant du coussin de levage (20) à l'état rempli, de sorte qu'il soit possible de l'interposer le long d'un support (50) sous ou entre des objets (22) à soulever.
  2. Coussin de levage selon la revendication 1, caractérisée en ce que la paroi (3) avant, les flancs (31, 32) et le bord arrière (5) du coussin sont dans une matière pouvant être déformée, préférentiellement renforcée.
  3. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie supérieure (1) et la partie inférieure (2) du coussin de levage présentent une surface supérieure ou égale à celle du coussin de levage.
  4. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que les flancs circonférentiels du coussin de levage sont dans une matière pouvant être déformée, qui comprend préférentiellement des renforts afin de tenir la pression requise dans le but prévu.
  5. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties prolongées inférieure et supérieure reliées entre elles du coussin de levage sont munies de boucles d'ancrage (7) pour permettre le transfert du coussin en forme de coin.
  6. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le coussin de levage (20) présente une forme de coin qui s'amincie vers le bord avant (4) de celui-ci.
  7. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le bord arrière (5) du coussin en forme de coin comporte un raccordement (51) pour remplir l'espace interne (11) du coussin avec un fluide (10) et pour évacuer ce même fluide respectivement.
  8. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le bord arrière (5) du coussin en forme de coin comporte une soupape de sécurité (6).
  9. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie supérieure (1) et la partie inférieure (2) du coussin de levage sont sensiblement quadrangulaires.
  10. Coussin de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le rapport de hauteur du coussin est de 1:3 entre le bord avant (4) et le bord arrière (5) de la partie gonflable du coussin.
  11. Coussin de levage selon l'une quelconque des revendications 4 à 10, caractérisé en ce que les flancs latéraux (31, 32) et le flanc arrière (33) du coussin de levage sont en Kevlar.
  12. Coussin de levage selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les faces de dessus et de dessous (52, 53) du coussin de levage sont en textile de caoutchouc renforcé par du tissu.
  13. Coussin de levage selon l'une quelconque des revendications 1 à 12, caractérisé en ce que des poignées de transport (55) sous la forme de sangles de levage sont prévues sur le bord arrière (5) du coussin de levage, de préférence au niveau des coins (56, 57, 58, 59) du coussin.
EP06799793.2A 2005-10-25 2006-10-23 Coussin de levage cuneiforme Active EP1940721B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE0502360 2005-10-25
SE0502623A SE529429C2 (sv) 2005-10-25 2005-12-01 Kilformad lyftkudde
SE0601098 2006-05-17
PCT/SE2006/001195 WO2007050016A1 (fr) 2005-10-25 2006-10-23 Coussin de levage cuneiforme

Publications (3)

Publication Number Publication Date
EP1940721A1 EP1940721A1 (fr) 2008-07-09
EP1940721B1 EP1940721B1 (fr) 2010-09-29
EP1940721B2 true EP1940721B2 (fr) 2017-09-06

Family

ID=37968052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06799793.2A Active EP1940721B2 (fr) 2005-10-25 2006-10-23 Coussin de levage cuneiforme

Country Status (7)

Country Link
US (1) US8215615B2 (fr)
EP (1) EP1940721B2 (fr)
AT (1) ATE482902T1 (fr)
AU (1) AU2006306833B2 (fr)
CA (1) CA2626137C (fr)
DE (1) DE602006017242D1 (fr)
WO (1) WO2007050016A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7637480B2 (en) * 2006-11-28 2009-12-29 Jtw Associates Llc Extrication device and method therefor
GB0625097D0 (en) 2006-12-15 2007-01-24 Sms Technologies Ltd A transfer trolley
GB2473047A (en) 2009-08-28 2011-03-02 Personal Lifting Ltd A inflatable support element for a transfer trolley with a tether to allow rotation
EP2332879B1 (fr) * 2009-12-09 2013-01-16 Vetter GmbH Coussin de levage constitué de matériau en caoutchouc en forme de bande, vulcanisé à chaud dans une presse et son procédé de fabrication
RU2453492C1 (ru) * 2010-12-15 2012-06-20 Общество с ограниченной ответственностью Научно-производственное предприятие "АРМОКОМ-ЦЕНТР" Способ изготовления домкрата-подушки и домкрат-подушка
CN103321666A (zh) * 2013-06-29 2013-09-25 长治市永华机械有限公司 用于狭小空间的液压垫升降机构
DK178296B1 (da) * 2014-08-08 2015-11-09 Dissing As Hjælpeværktøj til brug ved placering af elementer i forhold til en tilstødende flade
WO2018191452A1 (fr) 2017-04-12 2018-10-18 Bruce Urff Coin d'air gonflable comprenant un canal d'outil et procédé associé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH559133A5 (en) † 1972-04-07 1975-02-28 Goodyear Tire & Rubber Dunnage device - of textile mesh reinforced polymeric material
US4061310A (en) † 1975-10-20 1977-12-06 Manfred Vetter Lifting cushion for the lifting, supporting and moving of heavy objects
US4741086A (en) † 1985-08-29 1988-05-03 The B. F. Goodrich Company Pneumatic lift jack

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Publication number Priority date Publication date Assignee Title
US3990681A (en) * 1976-01-29 1976-11-09 Mckeen Sr Edwin E Pneumatic ramp for vehicle leveling
US4060170A (en) * 1976-10-08 1977-11-29 The United States Of America As Represented By The Secretary Of The Army Tire mount-dismount mechanism
SE410441B (sv) 1978-03-13 1979-10-15 Jonsereds Fabrikers Ab Bryt- eller lyftanordning
EP0088506A1 (fr) 1982-01-28 1983-09-14 Melville Reese Dill, Jr. Dispositif de séparation pour la manipulation d'objets
US4518151A (en) * 1982-01-28 1985-05-21 Dill Jr M Reese Article separator for materials handling
EP0115199A1 (fr) 1982-12-27 1984-08-08 William O. Holmes Cric hydraulique et son procédé de fabrication
JPS61254497A (ja) * 1985-03-22 1986-11-12 ザ　ビ−．エフ．グツドリツチ　カンパニ− 空気式ジヤツキ及びその製造方法
CN1083521C (zh) * 1997-05-20 2002-04-24 克劳斯·豪恩斯特拉普·迪兴 用于紧急打开车门的工具
US6511046B1 (en) * 1999-05-20 2003-01-28 Harry M. Solakian Resilient air compressible apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH559133A5 (en) † 1972-04-07 1975-02-28 Goodyear Tire & Rubber Dunnage device - of textile mesh reinforced polymeric material
US4061310A (en) † 1975-10-20 1977-12-06 Manfred Vetter Lifting cushion for the lifting, supporting and moving of heavy objects
US4741086A (en) † 1985-08-29 1988-05-03 The B. F. Goodrich Company Pneumatic lift jack

Also Published As

Publication number Publication date
WO2007050016A1 (fr) 2007-05-03
CA2626137A1 (fr) 2007-05-03
AU2006306833A1 (en) 2007-05-03
US8215615B2 (en) 2012-07-10
EP1940721B1 (fr) 2010-09-29
US20080210917A1 (en) 2008-09-04
ATE482902T1 (de) 2010-10-15
AU2006306833B2 (en) 2011-06-30
EP1940721A1 (fr) 2008-07-09
CA2626137C (fr) 2015-01-13
DE602006017242D1 (de) 2010-11-11

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